4000C2=\frac{4000!}{\left(4000-2\right)!\times2!} 7998000 number of ways
Frequently asked questions (FAQs)
What is the length of a side of a triangle if its adjacent angle measures 40 degrees, the opposite angle is 80 degrees, and the opposite side is 6 units long?
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Find the length of the third side of a triangle if two sides measure 7cm and 9cm, and the included angle is 60 degrees.